Transition Metals Flashcards
When does d orbital splitting occur?
repulsion from electrons in the ligand
Colours of many transition metal complexes can be explained in terms of
d-d transitions
When is light absorbed?
when electrons in a lower energy d orbital are promoted to a d orbital of higher energy
If light of one colour is absorbed
then the complementary colour will be observed
When do electrons transition to higher energy levels?
when energy corresponding to the ultraviolet or visible regions of the electromagnetic spectrum is absorbed
What allows transition metals to act as catalysts?
The presence of unfilled d orbitals
What are heterogeneous catalysts?
Different state to the reactants
What are homogeneous catalysts?
Same state as the reactants
What do heterogeneous catalysts do?
They adsorb reactive molecules onto their active sites.
What Is a dative bond?
a covalent bond in which both electrons come from the same atom
When can transition metals be colourless?
full d subshell, does not absorb visible light
What are monodentate ligands?
Form 1 bond to the metal
